Hub filler for metal wheels



M. LACHMAN.

HUB FILLER FOR METAL WHEELS.

APPLICATION FILED IAN.15. 1921.

1 130,910. A Patented 00t.3,1922.

avwantoz /7?a ur/ce L c awocmw 5 ;;f..-unl ireo STATES FATE pacmran, or NEW, roan, Y., nssrcnon ro nnr arnmrn u s irn p obnf or pn'rnrinnam, PENNSYLVANIA, A CORPORATION or riivias'ir''r v n iir' r'i HUB airman FOR air'n' r'an WHEELS.

Application filed January 15, 1921. Serial No. 437,403. 1 a w t:

To all whom it may concern:

Be it known that I, MAURICE LACHMAN, acitizen of. the United States, and a resident offNew York, in the county of New York and State of New York, have invented certain new and useful Improvements in-Hub 1 Fillers for MetalVWheels, of which the following is a specification.

i=-My nventi'on relates to wheels of the class in which the inner ends of the spokes are anchored in the hilb shell orhub cavity by a materialfillin the hub cavity and spaces around-said spo e ends.

F :The invention *relates more particularly to wheels ofithis class when constructed with spokes of metal anchored in a metallic hub shelland consists in the new article or wheel andinethdd of producing the same as more particularly hereinafter described and claimed. r

' The objectof the invention is to produce aizwhel Ehavin its spokes anchored in. a hub filler that she I effectively bi'nd the hub and spolisfikep" out all warm moisture and not disintegrate due to the jars and shocks to which the wheel is submitted in use.

My invention consists essentially in a, metal wheel having its spokes anchored in the shell b a non-metallic material, plastic when arti cially heated so as to be capable of being forced by pressure into the spaces in the shell and around the spoke ends and adapted to become rigid, hard and non-disintegratin and to remain adherent to the metal sur ace against which it is pressed when the said material is cooled to the normal temperature.

A non-metallic material suitable for the purposes of my; invention and fulfilling the requirements t ereof is the material known commercially as gavenite, manufactured and sold by the Gavenite Company of Point Pleasant, in the State of New Jersey, U. S. A., which is frequently employed in the construction of electrical fittings and devices and which, being non-metallic, is not liable to shrink on cooling and does not disintegr'ate due to use of the wheel. Other materials having the qualities described may obviously be used in place of the gavenite.

In the accompanying drawings:

Fig. 1 is a vertical, central section of the base of a mold adapted for use in carrying i i .i out. my invention with the particular form of hub shell shown. F, J f

Fig. 2 is a similar section through the. mold with the top half of the mold applied and the spoke end in'place; m;- 1 1 E F'g. 3 is a section similar to=.Figi 2 showing the filling material applied preparatory to the application of the molding'presslwer Fig.4 is like Fig. 3 with-thendditioa1of the pressure toollstiown above thesami'hb Fig. 15 shows the completion of theinmlding operation'rand minim.

Fig. 6 the hub shell after removal fr the mold and beforethe attachment iofiithe endplate of the hub: Y. .i i"? 1.. will Figlii'i's anen'dviewpf the huboint he completed wheel aHCl'E-A I:

Fig. 8 is a horizontalsectionithiroughithc hub. -="i",iG w l. l'illhg:

1 indicates the base lofqthefniold armed or adapted to. receive; andsu'pportnth 1111 shell 2 of the particultirmformrshowlm land provided 'with the centralvpost ShbyMWLlrich the central holeof th efinis'hedl' hiub iisfionmed in the filler material. The shell 2 is perforated for insertion radially of the metal spokes 4 (although it might be otherwise formed to permit the spoke ends to be located within the hollow hub Space) and as shown in Fig. 2. The hub shell indicated embodies one end plate of the hub, the other end plate shown in Fig. 8 at 5 being applied and secured by the bolts 6 after the filler material has been pressed in place.

7 is the top plate of the mold adapted to center or locate the pressing tool 8 shown in Fig. 4 and to confine the movement of the plastic material in the compressing operalion so as to cause it to locate itself under the presser within the spaces of the hub shell. The plastic filler material such as gavenite or other material having the characteristics above stated, is indicated at 9. it is supplied in such quantity that when the pressure device 8 is pressed home its exterior flange is stopped a ainst the edge of the top plate 7, the said p astic material will completely fill the cavity and be pressed against the surfaces of the hub shell and spoke ends firmly, being thereafter permitted to cool and the superfluous material, if any, being dressed ofl to secure the finished result indicated in Fig. 6.

Fig. 5 shows the pressure device pressed home and the filler material occupies H23 spaces withi n the shel; be ass um thattjafiathb figiifi iamou er has been supplied for that result.

in the conduct of the proc ss it will of course be understood that the materialn iight be applied in a softened, homogeneous mass that has been previously werkedina machine or otherwise, or that the material heated may be applied in powdered .or granulated form, the powdered mass being heated so as to be in condition to become plastic and fill the shell onthe application of pressure. p i

In carrying out the operation it is preterable that the metallic shell and the spoke should also be heated as this assists in bringing about adherence by the application of pressure and also tends to remove any liahility to separation of the surfaces by any difference in their co-etficient of ex ansioh from the heat that might exist. A -ter the I completion of the operation as carried out to the point indicated in F ig. 6. holes may be drilled passing through the hub shell,- the filler and the hollow spoke ends for the reception of the bolts indicated in Fig. 8,

'-'i whereby the end plate 5 may be secured in place and the spoke ends further secured against radial movement in the hub.

What I claim as my invention is?- E L A meta-lvwheelwhaving a metallicspoke anchored in a metallic hub shetl by a non- .iiiiii 1 ewe -"it" of being 'molded by ressure into the space within the hub shel and of the character at)! r er'i fl.v idto adhe ntj? to aces which it is pressed when said material coplsto the normal temp ratare, a c

A m w whe l 1 1a. Essaare tub she by anchored wit in a metal c e tenji i 3. Themethod of producing a metal wheel having metalsispo anchored by an anthe hub cavity and choring material ii in spaces around the spo e ends consisting in assembli the :spkea with their ends extending withinthe shell aipplying a material rendered -'.plastie by heat and causing" the same to fillthe hubspaces and-become ad- I herent to the spukenends and walls of the hub shell by pliessureiappliedwto said material while it remains plastic by heat.

4. The methodofproduoi a'metal wheel having'imetalv spokes anchore by arr-anchor spoke ends, applying a material nendered plastic by heat and causing thesame ho lfill. the hub spaces andbecome iadherehtmtd the spoke ends and walls of the hub shell by pnessui'e applied to saidma'teria'l while it remains plastic by heat. at" New Yorkinithe' county ot-New York andFS tate of New: York thislthday of Jahuany AVID: L921.- T i z I a MAURICE LACHMAN; 

